Why doesn POLARIS Laboratories™ perform ASTM D2892 Glycol or FTIR Glycol as a routine test for detecting coolant in an engine oil?
POLARIS Laboratories™ will use ASTM D2892 only as a confirmation test and only upon customer request. POLARIS Laboratories™ does not perform this test routinely because of the possibility of false negatives and false positives. Although coolant may be present in the oil, the engine may be running hot enough to burn off the glycol. However, residual Sodium and/or Potassium from the coolant inhibitors, as well as the secondary metals listed in the previous answer above, will always be present making metal detection by ICP the most reliable test for detecting a coolant leak.
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